论文部分内容阅读
动态频谱接入是认知无线电技术的一种重要应用,它利用通信过程中出现的频谱空洞机会式地接入频谱,能极大地提高频谱的利用效率。文章介绍了动态频谱接入的一种分类方法,重点分析了该分类中三个模型的特征、关键技术,以及在美国下一代(XG)无线通信计划、IEEE802.22标准和欧洲端到端效率(E3)项目中对于动态频谱接入技术的研究现状,最后探讨了动态频谱接入技术的应用前景。
Dynamic spectrum access is an important application of cognitive radio technology. It takes advantage of the spectral holes in the communication process to opportunistically access the spectrum, which can greatly improve the spectrum utilization efficiency. This paper introduces a classification method of dynamic spectrum access, focusing on the analysis of the characteristics of the three models in this classification, key technologies, as well as in the next generation (XG) wireless communications plan, IEEE802.22 standards and European end-to-end efficiency (E3) project for dynamic spectrum access technology research status, and finally discusses the application of dynamic spectrum access technology prospects.